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[net-next,0/2] net: visibility of memory limits in netns

Message ID 20240528121139.38035-1-teknoraver@meta.com (mailing list archive)
Headers show
Series net: visibility of memory limits in netns | expand

Message

Matteo Croce May 28, 2024, 12:11 p.m. UTC 
Some programs need to know the size of the network buffers to operate
correctly, export the following sysctls read-only in network namespaces:

- net.core.rmem_default
- net.core.rmem_max
- net.core.wmem_default
- net.core.wmem_max

Matteo Croce (2):
  net: make net.core.{r,w}mem_{default,max} namespaced
  selftests: net: tests net.core.{r,w}mem_{default,max} sysctls in a
    netns

 net/core/sysctl_net_core.c                  | 75 ++++++++++++---------
 tools/testing/selftests/net/Makefile        |  1 +
 tools/testing/selftests/net/netns-sysctl.sh | 15 +++++
 3 files changed, 58 insertions(+), 33 deletions(-)
 create mode 100755 tools/testing/selftests/net/netns-sysctl.sh